Ark: Survival Evolved gamer slang referring to the Therizinosaur, a very strong feathered chicken-like dinosaur with very long claws. It is especially notable that one of the Therizinosaur’s attacks is one when it wiggles it’s fingers in a tickle-like way.
Beach Bob “Aww that Dino looks cute!
Me, an Intellectual “Don’t go near that Tickle Chicken you’ll Aggro it and it’ll kill you!”